The Housemaid's Secret by Freida McFadden
This part of the series talks about the past life of Millie. Millie, the Housemaid. Her boyfriend from the previous series, Enzo, had gone back to Sicily to look after his ailing mother. Millie had moved on and was in a good relationship with Brock, a lawyer who wanted to settle down and have a stable life. But, Millie has never felt the deep urge to settle down as she would have felt with Enzo. Millie has now found a housekeeping job at Wendy and Douglas Garrick's palatial home. She gets interviewed by Douglas and is informed that his wife has not been keeping too well. So she was largely guest-room bound. Rule was not to disturb her, just do the designated chores and leave the building. Despite being employed for over a month, Millie has not met Wendy. But every now and then she has heard odd noises - sobs, something crashing, something breaking. Millie's curiosity got the best of her and she was compelled find out what was wrong. Wendy refuses any help assuring that she ...